<template>
	<div class="goods-relevant">
		<!-- 头部 -->
		<div class="header">
			<i class="icon" />
			<span class="title">{{title}}</span>
		</div>
		<!-- 底部 -->
		<div class="slider">
			<a href="javascript:;" class="carousel-btn prev" @click="index--"><i class="iconfont icon-angle-left"></i></a>
			<a href="javascript:;" class="carousel-btn next" @click="index++"><i class="iconfont icon-angle-right"></i></a>
			<RouterLink tag="div" v-for="goods in sun" :key="goods.id" to="/">
				<img :src="goods.picture" alt="" />
				<p class="name ellipsis">{{ goods.name }}</p>
				<p class="price">&yen;{{ goods.price }}</p>
			</RouterLink>
			<div class="carousel-indicator">
				<span v-for="i in 4" :key="i" :class="{ a: index == i - 1 }" @click="index = i - 1"></span>
			</div>
		</div>
	</div>
</template>

<script>
export default {
	props: ["relevantlist",'title'],
	data() {
		return {
			index: 0,
		};
	},
	computed: {
		sun() {
			let a = this.relevantlist;
			return a.slice(this.index * 4, (this.index + 1) * 4);
		},
	},
	watch: {
		index: {
			handler(val) {
				if (val >= 4) {
					this.index = 0;
				}
				if (val <= -1) {
					this.index = 3;
				}
			},
			deep: true,
			immediate: true,
		},
	},
};
</script>

<style scoped lang="scss">
.carousel-btn {
	width: 44px;
	height: 44px;
	background: rgba(255, 255, 255, 0.2);
	color: #ccc;
	border-radius: 50%;
	position: absolute;
	top: 50%;
	transform: translate(0, -50%);
	z-index: 2;
	text-align: center;
	line-height: 44px;
	transition: all 0.5s;
	&.prev {
		left: 20px;
		i {
			font-size: 30px !important;
		}
	}
	&.next {
		right: 20px;
		i {
			font-size: 30px !important;
		}
	}
}
.a {
	background-color: #27ba9b !important;
}
.carousel-indicator {
	position: absolute;
	left: 50%;
	bottom: -20px;
	transform: translate(-50%, 30px) !important;
	z-index: 2;
	width: 200px;
	text-align: center;
	span {
		display: inline-block;
		width: 12px;
		height: 12px;
		background: rgba(0, 0, 0, 0.2);
		border-radius: 50%;
		cursor: pointer;
		~ span {
			margin-left: 12px;
		}
	}
}
.slider {
	display: flex;
	justify-content: space-around;
	padding: 30px 40px;
	position: relative !important;
	a {
		text-decoration: none;
	}
	> div {
		width: 240px;
		text-align: center;
		img {
			// padding: 20px;
			width: 190px !important;
			height: 190px !important;
		}
		.name {
			// width: 100%;
			font-size: 16px;
			color: #666;
			padding: 0 40px;
			text-overflow: ellipsis;
			white-space: nowrap;
			overflow: hidden;
		}
		.price {
			font-size: 16px;
			color: red;
			margin-top: 15px;
		}
	}
}
.goods-relevant {
	background: rgb(255, 255, 255);
	min-height: 460px;
	margin-top: 20px;
	width: 1240px;
	height: 460px;
	margin: 20px auto;
	.header {
		height: 80px;
		line-height: 80px;
		padding: 0 20px;
		.title {
			font-size: 20px;
			padding-left: 10px;
		}
		.icon {
			width: 16px;
			height: 16px;
			display: inline-block;
			border-top: 4px solid #27ba9b;
			border-right: 4px solid #27ba9b;
			box-sizing: border-box;
			position: relative;
			transform: rotate(45deg);
			&::before {
				content: "";
				width: 10px;
				height: 10px;
				position: absolute;
				left: 0;
				top: 2px;
				background: lighten(#27ba9b, 40%);
			}
		}
	}
}
</style>
